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@title Differential User Guide: Automated Landing
@group userguide

Configuring Phabricator so you can "Land Revision" from the web UI.

Overview
========

IMPORTANT: This feature is a prototype and has substantial limitations.

Phabricator can be configured so that approved revisions may be published
directly from the web interface. This can make publishing changes more
convenient, particularly for open source projects where authors may not have
commit access to the repository. This document explains the workflow and how to
configure it.

When properly configured, a {nav Land Revision} action will appear in
Differential. This action works like `arc land` on the command line, and
merges and publishes the revision.

This feature has significant limitations:

- This feature is a prototype.
  - This feature is only supported in Git.
  - This feature always lands changes onto `master`.
  - This feature does not currently provide chain of custody, and what lands
    may be arbitrarily different than what is shown in Differential.

To be landable, a revision must satisfy these requirements:

- It must belong to a repository which is tracked in Diffusion
    (both hosted and imported repositories will work).
  - The repository must have a **Staging Area** configured.
  - The repository must have **Repository Automation** configured. For
    details, see @{article:Drydock User Guide: Repository Automation}.
  - The revision must have been created with `arc diff` and pushed to the
    configured staging area at creation time.
  - The user clicking the "Land Revision" button must have permission to push
    to the repository.

If these requirements are met, the {nav Land Revision} action should be
available in the UI.

Next Steps
==========

Continue by:

- configuring repository automation with
    @{article:Drydock User Guide: Repository Automation}; or
  - returning to the @{article:Differential User Guide}.

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